 So even though poly water turned out not to be true that does not mean that you can't have more than the three paces of water We have in fact we have many many many of them Depending on the pressure and volume and the temperature, of course We will end up with lots of fairly complicated crystal shapes of ice so that there's a whole wealth here and the number of very smart People still study ice. There are some very famous research groups at Stockholm University studying properties of water in biomolecules, too I'm not going to take you through all these but it's important to be aware that if you of course if you change the conditions such as Temperature or pressure you can definitely end up in another phase So don't think that I told you that there were only three possible phases of water now There is a cool analogy to this remember that I said that poly water appeared in 1962 Likely inspired by this Kurt Vonnegut wrote the novel called the cat's cradle where he talks about ice nine Which is actually ice nine is not used in the normal ice charts as far as I know And the whole idea was ice nine was an ice that had pretty much the properties that fine-mannered it would It would the freeze already at 115 Fahrenheit that is 46 degrees centigrade and Anything that came in touch with this ice nine would then turn into ice nine and the ice nine would spread Leading to some sort of horror story. I do need to put that book in my reading list myself The point is that Kurt Vonnegut's probably had this better than a whole lot of scientists when against the poly water And it's fascinating to see how science occasionally up in the popular literature